Dump-car.



A. R. CHAMBERS.

DUMP GAR.

APPLICATION FILED JAN. 2s, 1913.

Patented Jau. 20, 1914.

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ALLISON R. CHAMBERS, OF NEXV GLASGOW, NOVA SCOTIA, CANADA..

` DUMP-CAR.

Specification of Letters Patent.

Patented Jan. 2o, 1914.

Application filed January 28, 1913. Serial No. 744,672.

[o all whom it may concern.'

Be it known that I, ALLisoN It. CHAM- nnns, ot' New Glasgow, in the Province of Nova Scotia and Dominion of Canada, /have invented certain new and useful Improve ments in Dump-Cars, of which the following is a full, clear, and exact description.

This invention relates to improvements in dump cars, and particularly to the class of dump cars which are used in connect-ion with mining operations for carrying coal, ore and the like.

The main object of the invention isA to provide a car of the drop bottom type having a very low body and a short wheel base, in order that the car may be easily operated on sharp curves in the track.

A further object is to provide a car so constructed that it will dump between the track rails in such a manner as not to obstruct the track in any way.

A still further object is to provide a car se constructed that the floor doors may be automatically unlocked to dump the car, and then automatically raised into closed position.

To accomplish these objects acar body is provided which extends below the axles, the axles being suitably protected from the contents ot thev car. The i'loor doors are attached to the car at their outer edges by means of arms which are pivoted to the car some distance above the bottom. A toggle mechanism is provided to hold the doors in closed position. A suitable stationary tripping device is located at a suitable point to engage and release the toggle mechanism, and an inclined trough is further provided between the rails and is adapted to raise the doors into closed position on the return of the car.

In the drawings which illustrate this invention: Figure 1 is a side elevation ofthe car partly in section. Fig. 2 is a plan view of the car, further illustrating the door opening and closing devices. Fig. 3 is an end elevation of the car showing the doors in open and closed positions. Fig. 4 is a vertical cross sectional view of the car on the line 4 4, Fig. 1.

Referring more particularly to the drawthewheels of the car and 7 the axles connectingsaid wheels in pairs. The body is supported on a pair of side sills 8 which are provided with notches 9 in their lower edges to 4enable the lower edge of the sill to be in line with or below the center of the axles.- Suit-able bearings 1Q in which the axles turn are mounted on the outer surface of the side sills.

The body, designated as a whole by the numeral 11, consists of a pair of side plates 12 attached to the inner surface of the side sills and 'lared outwardly above the sills. The sides extend a shortl distance below the axles so that their lower edges 13 are quite close to the track. The sides are connected by vertical ends 14 and the entire upper edge of the car is stiiened and strengthened by a circumferential'angle 15. The ends of the side sills are connected by suit-ably formed end sills 16. It will be seen in the drawings that the axles are located approximately one-third of the length of the car from the ends, so that as the car is comparatively short a very short wheel base is obtained, thus allowing the car to be operated with great ease on a very sharply curved track. The doors 17 which form the tloor of the car are preferably two in number and separate at the longitudinal center ot lthe car. v

ythe sills 8 and pivoted to said sills near their upper edges. It will thus be seen that the doors are not hinged directly to the body,

but are supported by perpendicular arms, so that when released the doors will move more laterally than downwardly in order to obtain the maximum of opening in the limited space between the bottom of the body and the track. When in open position, the doors form inclined chutes which protect the rails of the track from becoming obstructed with the lading of the car. Each door is provided with an upwardly extending end plate 19` which when the doors are in closedposition overlap the ends of the body and lie between the body and end sills. When the doors are in lowered position, these ends 19 form a continuation of the body ends and prevent the lading of the car escaping over the ends of the doors and onto the track rails.

It will be seen from the foregoing description that the body extends some distance below the-axles so that the axles pass through the same. In order to prevent the contents of the car from touching the axles andthereI 20 is provided over each axle, said housing being in the form of anmverted trough shaped plate extending from sldeto side of the body, the lower edges of sa1d plate being in line with the lower edges of the sides.

The mechanism which holds the doorsin elevated position co-nsists of a link 21 plvoted at its lower end to the end plate 19 of each door adjacent the free edge ofthe door. The upper extremities of these lmks are pivoted at a common point to one. end of' a lever 22, the opposite end of whlch 1s plvoted to the body at 23. In order to hold the links and lever in proper position, the lever 22 operates under a retaining strap 24 fixed to the body. A latch 25 is slidably mounted on the end of the body in position to engage the free extremity of the lever 22 and hold the same in elevated position whereby the doors are held closed and locked through the medium of the 'links 2l. A spring 26 mounted on a post 27 extending from the latch operates to hold the latch normally in engagement with the lever 22. The free extremity of the post is provided with a slot 28 into which the end of a small arm 29 projects. This arm is fixed to a trip shaft 30 which extends longitudinall of the car outside the body. At a suita le point a trip lever 31 is fixed to the shaft and is adapted to be brought into engagement by the movement of the car With an angularly disposed tripping bar or plate 32 mounted adjacent the track. It will be noted in the drawings that the arms 29 and trip lever 31 are at an angle of approximately 180, but it will be \understood that -this angle depends solely upon the vlocation and lnclination of the trip bar 32. l

The free extremity of the lever 22 is inclined as indicated at 33 and the end of the latch is parallelly inclined as indicated at 34. The strap 24.` in addition to forming a guide for the lever 22 actsas a stop to prevent the doors dropping so low as to catch in the tires or road bed upon which the rails are laid.

Assuming the doors to be in'closed position as shown in full lines when the movement of the car brings the trip lever into engagement with the stationary trip bar, the lever is shifted to ro-tate the trip shaft which operates the arms 29 to withdraw the latches 25 from engagement with the levers 22, so that the doors are allowed to drop by gravity. When the doors drop they draw down the lever 22 through the medium of the links, as shown in dotted lines, Fig. 3. The position of the doors protects therails from obstruction and directs the loading of the car vinto hoppers or chutes, which may be located between the track rails. When the empty car is moved away, the lower edges of the doors enter between the diverover the parallelly inclined end of the latch and forcing the latch back until the lever passes the latch. When the latch is released, the spring 26 returns the same automatically in position under the lever 22 so that the doors are locked in raised position.

The automatic door closing device consists of a pair of members 35 arranged at an angle to each other between the track rails. These members are furthermore inclined being lower at their divergent ends. The height of these members at their upper and contact ends'. is just suiiicient toraise the doors into fully closed position, and the distance between the lower ends of the members is suiiiciently large to allow the doors when in fully open position to enter therebetween.

Having thus described what I claim is 1. In a car, a. body,

my invention,

side sills supporting said body, axles passing through said side sills and body, and a protective housing for said axles within the body.

2. In a car, a body, side sills supporting said body, axles passing through said sills and body, a protective housing for said axles within the body, and doors forming the body Hoor.

3. In acar, a body, side sills supporting said body, axles passing through said side sills and body, a protective housing for said axles within the body, doors forming the Hoor of said body, and supporting arms for said doors pivoted to the sides of the body above the lower edge of the body.

4. In a dump car, a body, hinged doors forming the floor of said body, end plates attached to said doors overlapping the body ends, a lever pivoted to the body, links pivoted to the ends of the doors and pivoted to said lever at a common point, a latch holding said lever in elevated position, and a stop limiting the downward movement of said lever.

5. In a dump car, a body, doors forming the floor of said body, a latch arrangedto hold said doors in closed position, a shaft pivoted to thebody, an arm of said shaft engaging the latch, and means for rotating said shaft whereby the latch will be withdrawn,'and means for limiting the downward movement of the doors.

6. In a dump car, a body, a pair of doors meeting at the longitudinal center of the car and forming the ioor thereof, arms ex- 1,084,697- t l' i8 tending. upwardly from the outer edges of ing arms mounted on said shaft, means for said doors and hinged to the body consider. rotating said shaft whereby the latches will ably above the Alower edge thereof, a lever be withdrawn, and a stop inthe path of said pivoted to each end of the body, linkspivlever whereby the outward movement of 15 5 oted to the ends of said doors and pivoted the doors will be limited.

at a common point to each of said levers, a In witness whereof I have hereunto setlatch holding each of said links in elevated my hand in the presence of two Witnesses.

position, a spring` holding said latches nor- ALLISQN R. CHAMBERS. nally in engagement with the levers, a shaft Witnesses: 10 journaled on -the car body, arms ron said .L' A. W. GRANT,

shaft engaging the latches, latch withdraw J. W, SMITH. 

